Haven't used Auria for a few months after moving house recently but am now ready to get back into making music again

I upgraded to Auria pro when there was a 50% price reduction last year but it looks like now I am back to the standard version.
When trying to load songs that were created in Auria pro previously they will no longer load.
If I try to go to the Aria store it is prompting for a full price download so it seems I have now lost the upgrade.